Experimental Study of Thermosyphon variable conductivity heat pipe loads using magnetic balls And calculate the overall heat transfer coefficient
Subject Areas : Heat Transferهادی احمدی 1 , محمد بهشاد شفیعی 2 , فریده عتابی 3
1 - محقق دانشگاه علوم تحقیقات
2 - استاد دانشگاه
3 - استاد دانشگاه
Keywords: Heat pipe, thermosyphon, Variable Conductivity,
Abstract :
Increasing development of industry And keep pace with the rising cost of energy around the world Has meant that engineers are always looking for items The ability have to transfer large amounts of heat in the area of long and low, with a drop in temperature as well as lower power consumption than traditional equipment . Thermosyphon heat pipe type have attracted much attention. The main purpose of this project Evaluate the performance of a particular type of thermosyphon heat pipe with variable conductivity. The heat input to changes in load or temperature evaporation temperature of the evaporator can be fixed. We did this by using the metal balls in the evaporator tube thermosyphon . According to the current situation and said Laboratory equipment was required by the With to provide for measuring The rate of fluid filling tube , We study on heat pipe with variable coefficients The loss and the overall heat transfer coefficient. The results showed that Performance of the heat pipe is different in the thermal load 30, 60, 90, 120 watts per square meter due to changes in the size of the evaporator . The best performance of themosyphon was by comparing the data on the maximum amount of heat load of 120 watts at least during the inactive part of the evaporator between 0 to 1.5 cm.
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